Loom.



PATENTED NOV. 28, 1905.

C. RENGER.

LOOM.

APPLICATION FILED PEB. 23,1905.

4 SHEETS-SHEET l.

llll IllllIllll |||I Ilm lll lin H No. 805,751. PATENTED NOV. 28, 1905.C. RENGER. LOOM.

APPLICATION FILED TBB. 23, 1905.

4 SHEETS-SHEET 2.

H Il

| l III Il H I @Jal . liee/Zw?" ya a. im? y M No. 805,751. PATENTED NOV.28, 1905.

O. RENGER.

LOOM. APPLICATION FILED FEB. 23,1905.

4 SHEETS-SHEET 3.

Y FIG- 9-" No. 805,751. PATENTBD NOV. 28, 1905. C. RENGER.

l LOOM.

MPLIOATION FILED PEB. 23,1905.

4 sHzE-Ts-SHBBT 4.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed February 23, 1905. Serial N0. 246,931.

To alt whom, it may concern:

Be it known that I, CARL RENGER, a subject of the King of Saxony,residing at 77 2 Caixa de Correio, Rio de Janeiro, in the Republic ofBrazil, have invented new and useful Improvements in and Relating' toLooms, of which the following is a specification.

My invention relates to improvements in looms having stationary bobbinsof weftthread and gripper shuttles, and more especially to a device forimparting motion to the hook or catch'for the weft-loop shot in. Inlooms of this kind wherein the introduced weft-loop slipping off thegripper is caught up by a catching-needle arranged to move transverselyto the same and is held until the lathe beats it up the catching-needlein the devices heretofore used for the purpose is placed in thereceiving position by a spring which in the beating of the lathe isputin tension while the catching-needle is drawn back and is released bythe shuttle entering the corresponding shuttle-box. Accordingly theshuttle serves only for releasing the catching-needle forced byelasticity into the operative position. Now according to my saidinvention the movement of the shuttle itself is utilized for thepositive forward and backward movement of the catching-needle. This isrendered possible by the movement of the hook or catch to the receivingposition and also the backward movement of the same being eifected bypositive motion through the intervention of a movable stop combined withit, the movement of the said stop being limited by the shuttle moving toand fro.

In the constructional form represented in the accompanying drawings thegripper-shuttle is furnished with a reversible two-armed gripper, themovable stop serving also for reversing such gripper.

Figures 1 to 4 are plan views showing the improved device in differentpositions. Fig. 5 is a front elevation of the device. Fig. 6 is asection on the line A B of Fig. 5. Fig. 7 is a section on the line C Dof Fig. 5. Fig. 8 is a side view of a detail. Fig. 9 is a front view ofthis detail. Fig. 10 is a section on the line E F of Fig. 9. Fig. 11 isa front view of the device applied to a loom.

The gripper 2, reversed by the shuttle 35, is adapted to turn upon abolt or pivot 36, arranged vertically in the middle ofthe shuttle. Thehook orcateh 3, which serves for holding the weft-loop S shot in andslipping from the reversed gripper 2 is secured, for instance, to aslide 4, fitted to be moved in a suitable prismatic guide 5 transverselyto the shuttle-race 6.

For displacing the hook or catch 2 to its receiving position and fromthe same by the shuttle use is made in the constructional example of atwo-armed rocking lever 8 9, arranged to turn upon a fixed vertical boltor pivot 7, one arm 8 of the said lever engaging the slide 4, and a pin10 at the end of a lever 12, which is adapted to turn upon a fixed boltor pivot 11, engaging with a slot in the other arm 9. The arm 12 has astop 13 for a lever 14, furnished with a nose 15, which at the end ofthe turning movement of the lever carries away the lever 12, through theagency ofthe shuttle entering the shed. Moreover, the lever 14 isconnected with the lever 12 by a weak spring 0 in such a manner that theformer lever is normally pulled against the stop 13. On the passage ofthe shuttle from the shed, Fig. 1, the stop 17, reaching into its pathand provided on the lever 14, iitted to turn about the fixed verticalbolt or pivot 11, is carried away a certain distance by the gripper 2till the movement of the lever 14 in this direction is limited by afixed stop 18, Fig. 2. Through the stop 13 the partial movement of thelever 14 causes a corresponding turning movement of the lever 12 and ofthe rocking lever 8 9, thereby moving the slide 4, with the hook orcatch 3, forward to the receiving position, Fig. 2. In the continuedmovement of the shuttle the gripper 2 is reversed on the stop 17.

The gripper 2 of the shuttle 35 has two parallel prongs and presents onthe other side of its pivot 36 two fiat abutting faces 19, directed atright angles to each other for a stopspring 20, which has for its objectto secure the gripper 2 in its respective operative positions. When thestop 17, by which the gripper 2 is reversed, bears firmly upon the stop18, the gripper will be turned in the continued movement of the shuttle.By this means the weftloop S just shot in is released and caught up bythe hook or catch 3, Fig. 3. The weft-loop is drawn partly byits owntension, partly by a specially-provided tension device hereinafterdescribed, and is thrown from the hook or catch 3 in the followingbeating action of the lathe. The hook or catch is moved back to itsposition of rest as the shuttle passes from the shuttle-box into theshed, the reversed IOO gripper 2, which has already taken hold of thenew weft-loop, carrying away the stop 17 with its arm 14 in the oppositedirection, as before. At the end of the turning movement of the lever 14the nose 15 of this lever carries away the lever 12, which in its turncauses the' rocking lever 8 9 to be swung back in order to retract theslide 4 with the hook or catch 3, Fig. 4. Then the spring 16 brings thearm 1'4 with the stop 17 again to the position shown in Fig. 1.

As shown in Figs. 5 and 6, the shuttle has at the side turned to thefront a continuous groove 21 for safely guiding the weft-loop andpreventing too great swinging movements, such as would be liable tocause the same to jump out of the gripper-hook. 'A groove 22 in the rearside of the front wall of the shuttle-box constitutes the path for thegripper 2 and is bridged over by the thread drawn through a iixed eye 23and running to the fabric, which thread slips down by its tension on therear side of the front wall of the shuttle-box, the said rear side beingdownwardly inclined at the fore end, Fig. 7. Thus the gripper 2 cansecurely seize the thread lying free above the groove 22. The device forputting the weft-th read in tension relaxes this thread on the stroke ofthe shuttle to obviate breakage of the same, and after the weft has beenshot in draws back again the loop pulled through too far. This device isrepresented by itself in Figs. 8 to 10.

On an adjustable bar 24 a thread-guide lever 25 is arranged to turn upona fixed pivot 27 in the direction of the pull of the thread inopposition to the power of a spring, such as a torsion-spring 26. At thefree end of the thread-guide lever an eye 28 is provided for guiding thethread, which also passes through two eyes 29 and 30, secured at theupper and lower parts of the adjustable bar 24. Normally thethread-guide lever 25 is forced by the spring 26 to the positionindicated in dotted lines, Fig. 9, and yields to any sudden orincreasing and decreasing tension of the thread in the weaving, inasmuchas' it swings between the positions indicated by dotted and full lines.It is expedient to limit the swinging movement in the direction of theaction of the spring by an adjustable stop 31 on the said bar 24 inorder to enable the action to be regulated according to exigencies. By aprojection 32 the thread-guide lever 25, moreover, acts upon aspring-clamp 33 34, designed for exerting a break action on the threadand arranged below the eye 29, the said projection entering the saidclamp and opening the same as soon as it passes to the positionindicated in full lines, Fig. 9, while it leaves the clamp on swingingoutward in the direction wherein the spring exerts its action-that is tosay, on the slackening and cessation of the tension of the thread-sothat the clamp will be closed in consequence of the spring action toprevent the thread from running on and form the consequent relaxing.

The tension device is secured to the board 37 of the lathe 38 of theloom at the entrance of the shuttle-box 39, Fig. 11. Above the same Iprovide the bobbin 41 of weft-thread upon a vertical spindle 40,likewise fixed to the lathe-board 37. Fig. 11 shows the shuttle 35passing from right to left, the thread.- guide lever of the tensiondevice being pulled on the right-hand side, because it follows the pullof the thread by the shuttle 35, thus yielding to the same. On theleft-hand side of the loom the thread-guide lever of the tension deviceis in the position of rest, into which it has been forced by thetorsion-spring.

l/Vhat I clairn as my invention, and desire to secure by Letters Patent,is-

1. In a loom of the character described, the combination, with theshuttle, the reversible gripper provided in the same, and the catch forthe weft-loop shot in, of a stop adapted to receive a limited movementfrom the gripper and to impart to the said catch a positive toand-fromovement, substantially as herein set forth.

2. In a loom of the character described, the combination, with theshuttle, the reversible gripper provided in the same, and the catch forthe weft-loopshot in, of astop adapted to receive a limited movementfrom the said gripper and to impart to the catch a positive toand-fromovement, and a iixed stop adapted to limit the movement of the movablestop and to reverse the gripper of the shuttle on the passage of thesame, substantially as herein set forth.

3. In a loom of the character described, the combination, with theshuttle, the reversible gripper provided in the same, and the catch forthe weft-loop shot in, of a stop adapted to receive a limited movementfrom the gripper and to impart to the catch a positive to-andfromovement, a fixed stop adapted to limit the movement of the movable stopand to reverse the gripper of the shuttle on the passage of the same, afixed pivot, a lever arranged to turn upon this pivot, the said levercarrying the aforesaid movable stop at its free end and another stop atits pivoted end, a second lever arranged to turn upon the said pivot andhaving a stop at its pivoted end, the said two levers being connected byaspring, a iixed pivot, a rocking lever arranged to turn upon thispivot, one arm of the rocking lever being yieldingly connected with thesecond lever and the other arm engaging the movable catch, substantiallyas herein set forth.

4. In a loom of the character described, the combination, with theshuttle, the reversible gripper provided in the same, and the catch forthe weft-loop shot in, of a stop adapted to IOO receive a limitedmovement from the gripper and to impart to the said catch a positivetoand-fro movement, a vertical spindle for carrying a bobbin ofweft-thread, two fixed eyes for guiding the weft-thread.l a movable eye,a lever carrying this eye, a pivot for the said lever, a spring tendingto pull the movable eye out of the path of the weft-thread, and anadjustable stop for the aforesaid lever, substantially as herein setforth.

5. In a loom of the character described, the combination, with theshuttle, the reversible gripper provided in the same, and the catch forthe weft-thread shot in, of a stop adapted to receive a limited movementfrom the gripper and to impart to the said catch a positive to-and-fromovement, a vertical spindle for carrying a bobbn of weft-thread, twofixed eyes for guiding the weft-thread, a movable eye, a lever carrying'this eye, a pivot for the said lever, a spring tending to pull themovable eye out of the path of the weft-thread, an adjustable stop forthe aforesaid lever, a spring-clamp arranged between the two fixed eyes,and a projection provided on the eyecarrying lever and adapted to passinto the said clamp for opening the same, substantially as herein setforth.

6. In a loom of the character described, the combination of the shuttle,the reversible gripper provided in the same, this gripper having two Hatfaces extending at the right angle to each other and two parallelprongs, a spring adapted to bear against either of the fiat faces of thegripper, the catch of the weft-loopshot in, and a stop adapted toreceive a limited movement from the gripper and to impart to (the saidcatch a positive to-and-fro movement,

substantially as herein set forth.

7. In a loom of the character described, the combination of the shuttlehaving a longitudinal groove in its front side. the reversible gripperprovided in the shuttle, this gripper having two flat faces extending ata right angle to each other and two parallel prongs, a spring adapted tobear against either of the flat faces of the gripper, the catch for theweftloop shot in, and a stop adapted to receive a limited movement fromthe gripper and to impart to the said catch a positive to-and-fromovement, substantially as herein set forth.

8. In a loom of the character described, the combination of the shuttlehaving a longitudinal groove in its front side, the reversible gripperprovided in the same, theshuttle-box having in its front wall alongitudinal groove designed for the passage of the gripper, the saidfront wall being forwardly inclined at its fore end, the catch for theweft-loop shot in, and a stop adapted to receive a limited movement fromthe gripper and to im part to the said catch a positive to-and-fromovement, substantially as herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CARL REN GER.

